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Finding the Fourth Proportional to 121,054.88, 181,583.22 and 42,168.98

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Solution

The fourth proportional to 121,054.88, 181,583.22 and 42,168.98 is: 63,253.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,054.88 : 181,583.22 = 42,168.98 : x
  2. Step 2: Convert to fraction form
    121,054.88/181,583.22 = 42,168.98/x
  3. Step 3: Cross multiply
    121,054.88x = 181,583.22 × 42,168.98
  4. Step 4: Simplify right side
    121,054.88x = 7,657,178,264.60
  5. Step 5: Solve for x
    x = 7,657,178,264.60/121,054.88
  6. Step 6: Final answer
    x = 63,253.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.